Track-sander.



L H. & W, J. HANLON.

TRACK SANDER.

APPLICATION FILED MAR. 16,1913.

L2%,802w Patented Dec. 3; 1918.

lation of sand. to form a sand .cushion as described-in my, prior PatentNo. 811,144:v

therair discharge nozzle 25 havingpassages 26 and 27 therethrough. Therear face of p the nozzle is slotted as shown at 28so that it may beturnedby a screw driver when it is desired to remove it. A cleanoutplug. is provided'at29 lby means of which the opening intotheairchamberf23is opened to permit the removal of the air dischargenozzle 2 5 or to permit thechamber 23 to be blown oiit. By thisconstruction itis never necessary to remove the air nozzle to cleanit.

This is a great advantage because if the-nozz'le is jremovedthe sandwill" at once flow into the opening from which the nozzle was removedand will make the restoration of the nozzleinearly impossible'unless thesand boxis emptied of sand and the interior of the sander. cleaned;

At 19' is shown a clean out plug located directly below the inletopening 14. By removing this plug any accumulation of stones, roots orthe like may be easily removed.

In theoperation of the sander, sand is discharged by gravity throu'ghthe passage 13 directly into the said discharge'pipe' 16, the-flow ofsand being controlled by the sand valve'located in j the sand box andnot shown iiithe" drawings. Whenvth'e sand is discharged byair'pressure'as is the'ordinary method, it enters from the sandgbody through the"passages 18 and 14 and is then impelled by 'compressed'air' from thenozzle 25 on a substantially horizontal ,line in the general directionofthe' plug 20. Thence itjescap'es through the discharge pipe 16 to therails. 1

What we claim is: l

1: In combination with a sandbox having a boss through which aretwopassa'ges one forthe discharge of sand by gravity and theotherirfor'discharge of sand by compressed air, a'hody secured to saidboss and having co ies of this patentmay heobtainerl vfor two passagesresgistering with the two passages in the said boss, a common dischargeopening in the. body, a transverse passage connecting with thesaidcoi'nmon discharge opening, said common discharge opening beingdirectly in line with the gravity discharge opening in the boss, and anair discharge nozzle located near the junction of the connecting airpassage and the air inlet sand passage, the discharge end of thetransverse passage being at least as low as the air discharge nozzle.

2. In combination with a sand box having a boss through which are twopassages one in front of the other, the forward passage being for thedischarge of sand by gravityand the otherbeing for the discharge of'sand by compressed air, a body secured to said boss'and having twopassages register-' ing with the two passages of the boss and uniting-ina common discharge opening arranged directly in line with the forwardpassage in the said boss there being in the said-"body apassage inclineddownwardly slightly connecting the rear inlet passage with the frontinlet passage and an air nozzle located near the junction of saidinclined passage with the rear inlet passage.

3. Incombination with a sand box having a bossthrough which are twopassages one for the discharge of sand by gravity and the other for thedischarge of sand by compressed air, a body'secured to said boss andhaving two passages'regist'ering with the two passages in the said boss,the passage in thebody which connects with the air sand dischargepassage in the boss'sloping away from the gravity'passage' in'tlie body,a transverse passage which slopes slightly downwardly connecting the twopassages in said body. there being a common discharge opening directlyin line with the gravitydischarge opening in the boss, and-an air discharge nozzle located above the junction of the transverse passage andthe discharge pipe.

In testimony whereof'we afiix our signatures'.

JOHN H. I-IANLON. WILLIAM J. HANLON.

five cents each, by addressing the Commissioner'of Patents,

Washington; D. 0'.

